connection = $connection; } /** Check if a given Exif data is the video part of a Live Photo */ public function isVideoPart(array $exif) { return \array_key_exists('MIMEType', $exif) && 'video/quicktime' === $exif['MIMEType'] && \array_key_exists('ContentIdentifier', $exif); } /** Get liveid from photo part */ public function getLivePhotoId(File $file, array $exif) { // Apple JPEG (MOV has ContentIdentifier) if (\array_key_exists('MediaGroupUUID', $exif)) { return $exif['MediaGroupUUID']; } // Google MVIMG and Samsung JPEG if (\array_key_exists('MicroVideoOffset', $exif) && ($videoLength = $exif['MicroVideoOffset']) > 0) { // As explained in the following issue, // https://github.com/pulsejet/memories/issues/468 // // MicroVideoOffset is the length of the video in bytes // and the video is located at the end of the file. // // Note that we could have just used "self__trailer" here, // since exiftool can extract the video from the trailer, // but explicitly specifying the offset is much faster because // we don't need to spawn exiftool to read the video file. // // For Samsung JPEG, we can also check for EmbeddedVideoType // and subsequently extract the video file using the // EmbeddedVideoFile binary prop, but setting the offset // is faster for the same reason mentioned above. $videoOffset = $file->getSize() - $videoLength; return "self__traileroffset={$videoOffset}"; } // Google JPEG and Samsung HEIC / JPEG (Apple?) if (\array_key_exists('MotionPhoto', $exif)) { if ('image/jpeg' === $exif['MIMEType']) { // Google Motion Photo JPEG // We need to read the DirectoryItemLength key to get the length of the video // These keys are duplicate, one for the image and one for the video // With exiftool -G4, we get the following: // // "Unknown:DirectoryItemSemantic": "Primary" // "Unknown:DirectoryItemLength": 0 // "Copy1:DirectoryItemSemantic": "MotionPhoto" // "Copy1:DirectoryItemLength": 3011435 // <-- this is the length of the video // // The video is then located at the end of the file, so we can get the offset. // Match each DirectoryItemSemantic to find MotionPhoto, then get the length. $path = $file->getStorage()->getLocalFile($file->getInternalPath()); $extExif = Exif::getExifWithDuplicates($path); foreach ($extExif as $key => $value) { if (str_ends_with($key, ':DirectoryItemSemantic')) { if ('MotionPhoto' === $value) { $videoLength = $extExif[str_replace('Semantic', 'Length', $key)]; if (\is_int($videoLength) && $videoLength > 0) { $videoOffset = $file->getSize() - $videoLength; return "self__traileroffset={$videoOffset}"; } } } } // Fallback: video should hopefully be in trailer return 'self__trailer'; } if ('image/heic' === $exif['MIMEType']) { // Samsung HEIC -- no way to get this out yet (DirectoryItemLength is senseless) // The reason this is above the MotionPhotoVideo check is because extracting binary // EXIF fields on the fly is extremely expensive compared to trailer extraction. } } // Samsung HEIC (at least S21) if (\array_key_exists('MotionPhotoVideo', $exif) && !empty($exif['MotionPhotoVideo'])) { // It's a binary exif field, decode when the user requests it return 'self__exifbin=MotionPhotoVideo'; } return ''; } /** * Process video part of Live Photo. */ public function processVideoPart(File $file, array $exif): bool { $fileId = $file->getId(); $mtime = $file->getMTime(); $liveid = $exif['ContentIdentifier']; if (empty($liveid)) { return false; } $query = $this->connection->getQueryBuilder(); $query->select('fileid') ->from('memories_livephoto') ->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT))) ; $prevRow = $query->executeQuery()->fetch(); $params = [ 'liveid' => $query->createNamedParameter($liveid, IQueryBuilder::PARAM_STR), 'mtime' => $query->createNamedParameter($mtime, IQueryBuilder::PARAM_INT), 'fileid' => $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT), 'orphan' => $query->createNamedParameter(false, IQueryBuilder::PARAM_BOOL), ]; if ($prevRow) { $query->update('memories_livephoto') ->where($query->expr()->eq('fileid', $query->createNamedParameter($fileId, IQueryBuilder::PARAM_INT))) ; foreach ($params as $key => $value) { $query->set($key, $value); } } else { $query->insert('memories_livephoto')->values($params); } return $query->executeStatement() > 0; } /** * Delete entry from memories_livephoto table. */ public function deleteVideoPart(File $file): void { $query = $this->connection->getQueryBuilder(); $query->delete('memories_livephoto') ->where($query->expr()->eq('fileid', $query->createNamedParameter($file->getId(), IQueryBuilder::PARAM_INT))) ; $query->executeStatement(); } }